Linux啟停java程式腳本

備注：本腳本是根據網上其他部落格的腳本修改而來。

#!/bin/sh
BASE_PATH=/data1/app/start-jar/test/
APP_NAME=demo-0.0.1-SNAPSHOT.jar
APP_LOG="log.log"
APP_PATH=${BASE_PATH}${APP_NAME}
#檢查程序是否已經在運作，如果在運作則傳回1，否則傳回0
is_exist()
{
    pid=`ps -ef | grep -w "${APP_NAME}" | grep -v "grep" | awk '{print $2}'`
	if [ -z "${pid}" ]
		then return 1
	else
		return 0
	fi
}

# 列印程序的狀态資訊
status()
{
	is_exist
	if [ $? -eq "0" ]
	  then echo "${APP_NAME} is running. pid=${pid} ."
	else
	  echo "${APP_NAME} is not running"
	fi
}

# 啟動程序
start()
{
	is_exist
	if [ $? -eq "0" ]
		then echo "${APP_NAME} is already running. pid=${pid} ."
		return 0
	else
		echo "try to start ${APP_NAME} ... "
		nohup java -jar ${APP_PATH}  > ${APP_LOG} 2>&1 &
		# 程式的啟動需要一定的時間，這裡設定暫停時間(3秒)，機關是秒
		sleep 3
		is_exist
		if [ $? -eq "0" ]
		then
			echo "${APP_NAME} is running now. pid=${pid}."
			return 0
		else
			echo "failed to start ${APP_NAME}! see ${APP_LOG} for more details."
			return 1
		fi
	fi
}

# 停止HelloWorld程序
stop()
{
	is_exist
	if [ $? -eq 0 ]
		then  echo "try to stop ${APP_NAME} ..."
		kill -9  ${pid}
		if [ $? -ne 0 ]
			then echo "failed to stop ${APP_NAME}!"
			return 1
		else
			echo "${APP_NAME} stopped."
			return 0
		fi
	else
	  echo "${APP_NAME} is not running!"
	  return 1
	fi
}

# 重新開機HelloWorld程序
restart()
{
	stop
	start
}

# 顯示幫助資訊
help()
{
	echo "status                   show the status of ${APP_NAME} server."
	echo "start                    start the ${APP_NAME} server."
	echo "stop                     stop the ${APP_NAME} server."
	echo "restart                  restart the ${APP_NAME} server."
}

# 主函數
main()
{
	case "$1" in
	status)  
		status;;
	start)    
		start;;
	stop)    
		stop;;
	restart)  
		restart;;
	help)  
		help;;
	*)        
		echo "command param error ! see follow help "; 
		help;;
	esac
}

# 執行主函數 $1表示選擇第一個字元串為參數，比如終端指令是：./run.sh start status，則選擇start為輸入參數
main $1